XGY   Grimsby Mountain, ON Weather Observed At   43-11  N    79-34  W

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2026-06-30	1:00pm			Max		Min
Weather		----
Temperature		32.8 °C		32.8 °C	12:43pm	19.8 °C	3:22am
Relative Humidity		68 %		92 %	5:59am	67 %	12:53pm
Dew Point		26.1 °C		27.2 °C	12:17pm	17.8 °C	12:03am
Wind Velocity		184 ° at  2.4 G 9.6 kt		9.6 kt	12:53pm
Pressure		29.940 "  ↓		30.047 "	12:00am	29.940 "	12:59pm
Rainfall Rate		0.0 mm/h		0.0 mm/h	----m
Snow On Ground		0 cm
Brightness / Darkness		918 W/m² /  0.00 m/"²		953 W/m²	12:50pm	18.93 m/"²	4:00am
Remarks

Rainfall	Today	0.0 mm	Storm Total	0.0 mm
Snowfall	Today	0.0 cm	Storm Total	0.0 cm

Evapotranspiration

Today

-2.54 mm

Lake Conditions

Water Temperature  20.7 °C

Waves  ½ '

ICE FREE

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Meteor Index	5   Random
Aurora Index / Solar	37   Unsettled   - 8 nT	Solar Flux   195  sfu  /   S 0    G 0    R 2   /  MUF   31.6 MHz

Sunrise	5:42am	Sunset	9:02pm
Moonrise	N/A	Moonset	N/A	Moon Phase	Full Moon

Grimsby Mountain Weather Maps
Local	Regional	Area	Synoptic
updated H+09 and every 10m	updated H+19 and H+49	updated H+19

Ontario 6-Hour Meteorological Summary

Canadian 6-Hour Meteorological Summaries

CLIMAT Data
Official	Yesterday					2004	2005	2006	2007	2008	2009	Normals & Records
		2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
		2020	2021	2022	2023	2024	2025	2026

Grimsby Mountain Charts

	Sky Quality (Darkness) Meter courtesy of

              

Wx Map	Sat Pix	IR Sat Pix	Radar	Lightning
	Water	Ice

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  This is a privately operated weather station that is part of the Meteorological Service of Canada's official observing network.
Permission to publish the weather statistics found on this website is not required.
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